/Engine/Source/Runtime/Engine/Classes/Particles/Location/ParticleModuleSourceMovement.h
class UParticleModuleSourceMovement : public [UParticleModuleLocationBase](API\Runtime\Engine\Particles\Location\UParticleModuleLocationBase)
FRawDistributio...
SourceMovementScale
The scale factor to apply to the source movement before adding to the particle location.